/**
 * Copyright 2013 Netflix, Inc.
 * <p/>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.netflix.servo.publish.cloudwatch;

import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.InstanceProfileCredentialsProvider;
import com.netflix.servo.Metric;
import com.netflix.servo.tag.BasicTagList;
import org.testng.Assert;
import org.testng.annotations.Test;

import java.util.ArrayList;
import java.util.List;

/**
 * CloudWatchMetricObserver tests.
 */
public class CloudWatchMetricObserverTest {
  private final CloudWatchMetricObserver observer = new CloudWatchMetricObserver(
      "testObserver", "testDomain", new InstanceProfileCredentialsProvider());

  private static final int NUM_METRICS = 33;
  private static final int VALUE = 10;

  /**
   * Update.
   */
  @Test
  public void testUpdate() throws Exception {
    List<Metric> metrics = new ArrayList<>(NUM_METRICS);
    for (int i = 0; i < NUM_METRICS; i++) {
      metrics.add(new Metric("test", BasicTagList.EMPTY, System.currentTimeMillis(), VALUE));
    }

    try {
      observer.update(metrics);
    } catch (AmazonClientException e) {
      e.printStackTrace();
    }
  }

  /**
   * create dimensions.
   */
  @Test
  public void testCreateDimensions() throws Exception {

  }

  /**
   * create metric datum.
   */
  @Test
  public void testCreateMetricDatum() throws Exception {

  }

  /**
   * create put request.
   */
  @Test
  public void testCreatePutRequest() throws Exception {

  }

  @Test
  public void testTruncate() throws Exception {
    observer.withTruncateEnabled(true);
    Assert.assertEquals(CloudWatchMetricObserver.MAX_VALUE,
        observer.truncate(Double.POSITIVE_INFINITY));
    Assert.assertEquals(-CloudWatchMetricObserver.MAX_VALUE,
        observer.truncate(Double.NEGATIVE_INFINITY));
    Assert.assertEquals(CloudWatchMetricObserver.MAX_VALUE,
        observer.truncate(Double.MAX_VALUE));
    Assert.assertEquals(-CloudWatchMetricObserver.MAX_VALUE,
        observer.truncate(-Double.MAX_VALUE));
    Assert.assertEquals(0.0, observer.truncate(Double.MIN_VALUE));
    Assert.assertEquals(0.0, observer.truncate(-Double.MIN_VALUE));

    Assert.assertEquals(1.0, observer.truncate(1.0));
    Assert.assertEquals(10000.0, observer.truncate(10000.0));
    Assert.assertEquals(0.0, observer.truncate(0.0));

    Assert.assertEquals(0.0, observer.truncate(Double.NaN));
    observer.withTruncateEnabled(false);
  }
}
